Glass up with lipped case and screen protector. Never though of some object hurting it, just never really felt the need to aim glass down. One difference is when riding my bike, in my pocket its glass down, incase i crash, the glass is protected by my body and the case protects the back.

i have always kept it glass up unless its on something soft like a bed or sofa. i have the griffin clarifi case with a screen protector, so there is a little lip if i wanted to, i just prefer it face up

Glass down, but only because my 3GS is in a hard shell case by Incase. The case provides a small lip around the glass, so even when face down, the glass never comes in contact with the surface it's resting on (assuming it's flat!).

Glass down when at home because my dog is a drooling machine, and at bars or restaurants because of food and beverage's ability to splatter. Otherwise, glass up. I do use a lipped hard case at all times.

I rarely ever put it down, when I do it's on a soft surface like I'm looking at it sitting on my couch arm right now. It is always glass up because I don't want it to scratch or break. I would never put it near liquid and if liquid was placed near it I would move it right away so there's never a chance of anything spilling on it.

I have iSkin soloFX cases I use. They are a silicon that covers the bezel, and there's a spacing when you set the phone down to where the glass is actually not even near touching the table, the case is.

If it's out of the case, then I definitely put it face up, as I don't want the glass directly touching a rough surface.

I have a case on mine that covers the chrome edge so this give u alil clearence IF I out it face down. Wihh a case it's fine to put it back down. But if I didn't have a case I wouldn't put it back down cause it will put alot of scratches on the back black cover. And most people are concerned about the look of the back. Back down with case is my choice

Since my phone has a snug fitting rubber jacket, I always put it glass down. The rubber jacket prevents the glass from coming in contact with the surface. If I put it glass up, there is the chance something could damage the glass somehow. Glass down, it is protected, like a turtle or armadillo.

I have iSkin soloFX cases I use. They are a silicon that covers the bezel, and there's a spacing when you set the phone down to where the glass is actually not even near touching the table, the case is.

If it's out of the case, then I definitely put it face up, as I don't want the glass directly touching a rough surface.